scholarly journals Phase angle. Medical interpretations and applications.

2021 ◽  
Author(s):  
Svetlana P. Shchelykalina ◽  
Dmitry V. Nikolaev
Keyword(s):  
Renal Failure ◽  
Body Composition ◽  
Clinical Application ◽  
Phase Angle ◽  
Protein Fraction ◽  
Evidence Base ◽  
The Body ◽  
Muscular System ◽  
Metabolic Processes ◽  
New Applications

The choice of the topic of this work is due to the interest of specialists using bioimpedance technology for assessing the rate of metabolic processes and body composition, to the possibilities of the clinical application of the phase angle. Phase angle (PhA) is a parameter specific only to the bioimpedance method of obtaining information about body composition. In the early 2000s, it was shown that low PhA values in catabolic diseases can be used to assess survival, while high values can be used to assess the fitness of the muscular system in athletes and other individuals who regularly exercise. Systematic reviews and meta-analyzes of subsequent years have summarized the evidence base of these provisions and identified a number of new applications - in sarcopenia, anorexia, and renal failure. In assessing nutrition, PhA is used to indirectly characterize both the protein fraction of the body and the rate of metabolic processes.

scholarly journals Bioimpedance Analysis of Human Body Composition: Medical Applications, Terminology.

2021 ◽  
Author(s):  
Svetlana P. Shchelykalina ◽  
Dmitry V. Nikolaev
Keyword(s):  
Body Composition ◽  
Human Body ◽  
English Language ◽  
Physical Development ◽  
The Body ◽  
Bioimpedance Analysis ◽  
Muscular System ◽  
Body Composition Assessment ◽  
Medical Environment ◽  
Human Body Composition

This article discusses the terminology features of bioimpedance analysis of body composition and the most common mistakes in the use of terms. In the Russian-speaking medical environment, you can often find the use of a number of inaccurate terms related to bioimpedance analysis of the human body composition. At the same time, the terminology of bioimpedance analysis of human body composition in English-language publications has long been established. The article presents the Russian and English terms of bioimpedance analysis of the human body composition with corresponding abbreviations, as well as the hierarchy of the terms body composition components, body composition parameters, parameters of bioimpedance analysis of body composition and bioimpedance parameters. The most developed areas of application of bioimpedance analysis in medical practice are discussed: assessment of nutrition and dynamic observations of changes in body composition, assessment of the body mineral mass, assessment of the body hydration parameters, assessment of blood supply to tissues and organs, including in the monitoring mode, assessment of the asymmetry of paired organs and limbs, assessment of pre-start readiness, physical development and the level of fitness of the athlete's muscular system.

Assessment of changes in the body composition in patients qualified for the operational treatment of the primary and metastatic liver tumors with the use of bioelectric impedance

2018 ◽  
Vol 90 (5) ◽  
pp. 1-5
Author(s):  
Michał Skroński ◽  
Marta Andrzejewska ◽  
Małgorzata Fedosiejew ◽  
Michał Ławiński ◽  
Dariusz Włodarek ◽  
...  
Keyword(s):  
Body Composition ◽  
Muscle Mass ◽  
Phase Angle ◽  
Surgical Intervention ◽  
Liver Tumors ◽  
Cell Mass ◽  
The Body ◽  
Invasive Treatment ◽  
Bioelectric Impedance ◽  
Before And After

Introduction: Resection is an optimal way of treatment of hepatic tumors and metastasis from another organ. The operational injury may influence on patients body composition examined by bioelectrical impedance (BIA). Analysis of parameters may be helpful in identifying early changes indicating of deterioration in nutritional status. The aim of the study: was to assess changes in body composition of patients before and after resection of liver tumors and potential radiofrequency ablation of lesions. Material and methods: The study included a group of 50 patients of the Department of General, Gastroenterological and Oncological Surgery, Medical University of Warsaw, who were qualified for radical surgical treatment of tumors within the liver. Data on water content, fat, muscle and cell mass were analyzed. Results: Comparing data obtained from patients before and after intervention in the liver, statistically significant (p <0.05) loss of intracellular water, muscle mass, cell mass, as well as adipose tissue, was demonstrated. The phase angle value in these patients also significantly changed, decreasing by an average of 0.61°. On the other hand, the increase in content was noted in the case of extracellular water. Conclusions: Surgical intervention within the liver causes noticeable, unfavorable changes in the body composition, as evidenced by the reduction in the value of muscle mass, as well as cellular mass, resulting in a decrease in the phase angle. Bioelectric impedance is a suitable method for assessing changes in body composition of patients undergoing liver resection and is useful in clinical practice. It is advisable to conduct further research in the group of patients undergoing invasive treatment of the liver due to: an increasing number of such operations and centers where this type of surgical intervention is performed.

scholarly journals The phase angle as a marker of health and body composition in soccer players in Bogotá – Colombia

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
P Argüello ◽  
A Gálvez ◽  
L Castro ◽  
I Sánchez ◽  
P Melo
Keyword(s):  
Skeletal Muscle ◽  
Body Composition ◽  
Muscle Mass ◽  
Phase Angle ◽  
Fat Mass ◽  
Skeletal Muscle Mass ◽  
The Body ◽  
Soccer Players ◽  
The Right ◽  
The Relationship

Abstract Background Body composition is a parameter that is evaluated to predict the nutritional status of the population. This is assessed by bioelectric impedance analysis, which reports BMI, fat percentage, skeletal muscle mass, phase angle (AP), among others. The latter, in recent years has become important because it is a direct electrical measurement in the body, used for the clinical prognosis of diseases such as cancer, anorexy nervous, sarcopenia and chronic liver disease. AP is an index of vitality and integrality of the cell membrane and an indicator of muscle strength and endurance; likewise, it is inversely related to BMI, age and gender, normal values in healthy populations range between 5.5° to 9°, it is believed that physical activity and sport can also modify AP values. Therefore, the purpose of the study was to determine the relationship between body composition and AP in soccer players in Bogotá, Colombia. Methods Quantitative, cross-sectional, correlational approach. The sample was 84 soccer players (age: 18.67 + 2.9 years; height: 1.73 + 0.07 m; weight: 66.58 + 9.94 Kg), who were assessed using the Bioimpedance method through InBody 770®. Results The averages obtained were: AP 6.46°+0.58; muscle mass 32.25 + 5.06 Kg, percentage of fat mass 15.90 + 3.97. There was a direct relationship between AP, skeletal muscle mass and lean mass in the right, left arm, trunk and right leg (p &lt; 0.01), while with the percentage of body fat mass of the right and left arm the relationship was inverse. Conclusions Body composition with high values of musculoskeletal mass and AP favor the functionality and development of strength, which in turn are protective factors for the presence of diseases such as sarcopenia. Key messages The Phase Angle is constituted as an easily accessible marker of nutritional health and morphofunctional profile in athletes. The Phase Angle and body composition as determinants of the profile in athletes.

scholarly journals Relationships between Body Composition Parameters and Phase Angle as Related to Lifestyle among Young People

2021 ◽  
Vol 11 (1) ◽  
pp. 80
Author(s):  
Aleksandra Jaremków ◽  
Iwona Markiewicz-Górka ◽  
Wojciech Hajdusianek ◽  
Paweł Gać
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Phase Angle ◽  
The Body ◽  
Composition Analysis ◽  
Anatomy And Physiology ◽  
Alcohol Water ◽  
Free Body ◽  
Vegetables And Fruits ◽  
Medical University

The aim of the study was to indicate which body composition parameters and which lifestyle components affect the phase angle (PA) value in young adults. Two-hundred-and-eighty-one students at Wroclaw Medical University participated in the study. A survey on respondent lifestyles was followed by anthropometric measurements, body composition analysis, and basal metabolic rate (BMR) calculation. The differences in the body composition of men and women corresponded to their sexual anatomy and physiology. Sex-dependent differences in lifestyle were also reported. The study revealed a relationship between PA and height, weight, BMR, BMI (body mass index), FFM (fat-free body mass), bone mass, water mass, muscle mass (r~0.4–0.7), ECW/ICW (extracellular water/intracellular water) and fat mass (r~−(0.4–0.6)) for the entire studied group. The relationship between PA values and lifestyle components concerned consumption of energy drinks, cola, alcohol, water, vegetables and fruits, meat, and also intervals between meals, time for physical exercises, and screen time (r~±0.2). The research shows that the PA value increases with an increase in positive body composition parameters. Following the principles of proper nutrition and physical activity increases PA values in most cases.

scholarly journals Segmental Phase Angle and Body Composition Fluctuation of Elite Ski Jumpers between Summer and Winter FIS Competitions

2021 ◽  
Vol 18 (9) ◽  
pp. 4741
Author(s):  
Agnieszka Ostachowska-Gąsior ◽  
Monika Piwowar ◽  
Joanna Zając
Keyword(s):  
Body Composition ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
The Body ◽  
Fat Free Mass ◽  
Visceral Fat Area ◽  
Composition Fluctuation ◽  
The Right ◽  
Dependent Samples

(1) Background: The purpose of this study was to observe segmental phase angle (PhA) and body composition fluctuation of elite ski jumpers. (2) Methods: In the study, 12 professional ski jumpers took part. Body composition was estimated with segmental multi-frequency bioelectrical impedance analysis. Repeated ANOVA was used to check the parameters’ variability in time. The symmetry between the right and left side of the body was verified with the t-test for dependent samples. Pearson’s linear correlation coefficient was calculated. (3) Results: The most stable parameter was body weight. An increase in the visceral fat area was noted, the fat-free mass dropped, and significant changes were noted in the internal and external cell water parameters. Parameters connected with water between the right and left side of the body were symmetrical. Significant correlation between PhA values and body parameters with regard to fat tissue and PhA values of the legs was noticed when PhA was measured at 50 kHz. (4) Conclusions: PhA could be considered as a ski jumper body symmetry monitoring tool. The described relationship may be useful for the assessment of body fat change, which, in the case of jumpers, is crucial. Moreover, our data suggest that segmental PhA evaluation could be a good solution for ski jumpers as a confirmation if lowered body mass and low BMI are still healthy and increase the chance for longer jumps and good performance.

scholarly journals Impact of biological therapy on body composition of patients with Chron's disease

2017 ◽  
Vol 63 (5) ◽  
pp. 407-413 ◽  
Author(s):  
Julianne Campos dos Santos ◽  
Carla Malaguti ◽  
Fernando de Azevedo Lucca ◽  
Andrea Lemos Cabalzar ◽  
Tarsila Campanha da Rocha Ribeiro ◽  
...  
Keyword(s):  
Body Composition ◽  
Waist Circumference ◽  
Phase Angle ◽  
Fat Mass ◽  
Biological Therapy ◽  
Protein Energy Malnutrition ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Impedance Method ◽  
Fat Mass Index

Summary Introduction: Protein-energy malnutrition in Crohn's disease (CD) has been reported in 20 to 92% of patients, and is associated with increased morbidity and mortality and higher costs for the health system. Anti-TNF drugs are a landmark in the clinical management, promoting prolonged remission in patients with CD. It is believed that the remission of this disease leads to nutritional recovery. The effect of biological therapy on body composition and nutritional status is unclear. Method: Prospective study of body assessment by bioelectrical impedance method in patients with moderate to severe CD undergoing treatment with infliximab. The main outcome was the body composition before and after 6 months of anti-TNF therapy. Results: There was a predominance of females (52%) with a mean age of 42±12 years. Most patients were eutrophic at baseline and remained so. There was an increase in all parameters of body composition after anti-TNF treatment: BMI (22.9±3.2 versus 25±3.8; p=0.005), waist circumference (88.1±6.7 versus 93.9±7.7; p=0.002), lean mass index (17.5±2.2 versus 18.2±2.3; p=0.000) and fat mass index (5.5±2.3 versus 6.8±2.3; p=0.000). Phase angle remained unchanged (6.2 versus 6.8; p=0.94). Conclusion: After therapy with IFX, all components of body composition increased, except for phase angle. The substantial increase in fat mass index and waist circumference led to concern regarding cardiovascular risk and, thus, to the need for further studies.

scholarly journals Cellulose for medical applications: Past, present, and future

BioResources ◽  
2006 ◽  
Vol 1 (2) ◽  
pp. 270-280 ◽  
Author(s):  
Nicholas Hoenich
Keyword(s):  
Renal Failure ◽  
Wound Healing ◽  
Clinical Application ◽  
Tissue Regeneration ◽  
Acetobacter Xylinum ◽  
Medical Applications ◽  
Synthetic Material ◽  
Microbial Cellulose ◽  
Healing System ◽  
New Applications

Films and tubes manufactured from cellulose have historically been used in the treatment of renal failure, but their use for this purpose has declined in recent years in favour of films manufactured from synthetic material blends. As the clinical application of cellulose for dialysis declines, new applications for its use are emerging, of which the most promising appears to be the use of microbial cellulose synthesized by Acetobacter xylinum as a novel wound healing system and as a scaffold for tissue regeneration.

COMPARISON OF ANTIHYPERTENSIVE EFFECT OF MOXONIDINE VERSUS CLONIDINE IN RENAL FAILURE PATIENTS.

2018 ◽  
Vol 6 (9) ◽  
Author(s):  
DR.MATHEW GEORGE ◽  
DR.LINCY JOSEPH ◽  
MRS.DEEPTHI MATHEW ◽  
ALISHA MARIA SHAJI ◽  
BIJI JOSEPH ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Failure ◽  
Blood Flow ◽  
Blood Vessel ◽  
Blood Vessels ◽  
High Blood Pressure ◽  
Antihypertensive Effect ◽  
The Body ◽  
Ability To Work ◽  
Blood Flows

Blood pressure is the force of blood pushing against blood vessel walls as the heart pumps out blood, and high blood pressure, also called hypertension, is an increase in the amount of force that blood places on blood vessels as it moves through the body. Factors that can increase this force include higher blood volume due to extra fluid in the blood and blood vessels that are narrow, stiff, or clogged(1). High blood pressure can damage blood vessels in the kidneys, reducing their ability to work properly. When the force of blood flow is high, blood vessels stretch so blood flows more easily. Eventually, this stretching scars and weakens blood vessels throughout the body, including those in the kidneys.

The use of Body Surface Index as a Better Clinical Health indicators Compare to Body Mass Index and Body Surface Area for Clinical Application

2018 ◽  
pp. 131-136
Author(s):  
Shirazu I. ◽  
Theophilus. A. Sackey ◽  
Elvis K. Tiburu ◽  
Mensah Y. B. ◽  
Forson A.
Keyword(s):  
Surface Area ◽  
Body Surface Area ◽  
Clinical Application ◽  
Body Surface ◽  
Body Height ◽  
Health Indicators ◽  
The Body ◽  
Body Parameters ◽  
The Relationship ◽  
Individual Body

The relationship between body height and body weight has been described by using various terms. Notable among them is the body mass index, body surface area, body shape index and body surface index. In clinical setting the first descriptive parameter is the BMI scale, which provides information about whether an individual body weight is proportionate to the body height. Since the development of BMI, two other body parameters have been developed in an attempt to determine the relationship between body height and weight. These are the body surface area (BSA) and body surface index (BSI). Generally, these body parameters are described as clinical health indicators that described how healthy an individual body response to the other internal organs. The aim of the study is to discuss the use of BSI as a better clinical health indicator for preclinical assessment of body-organ/tissue relationship. Hence organ health condition as against other body composition. In addition the study is `also to determine the best body parameter the best predict other parameters for clinical application. The model parameters are presented as; modeled height and weight; modelled BSI and BSA, BSI and BMI and modeled BSA and BMI. The models are presented as clinical application software for comfortable working process and designed as GUI and CAD for use in clinical application.

Sign in / Sign up

Export Citation Format

Share Document